Automatic grease-cup.



A. M. JOHNSON.

AUTOMATIC GREASE CUP. APPLICATION FILED SEPT. 19. 19 10.

1 1 61,3 1 3. Patented Nov. 23, 1915.

WITNESSES: IN VENTOR Y Wf/ M4 x04 BM A TTORNE Y COLUMBIA PLANocuAvn co..WASHINGTON, n. C.

ANDREW Johnson, on mmmvnromsfmmenn.

' AUTOMATIC GREASE-CUP. 1

Application filed September 19, 1910. Serial No. 582,596 r To all whomit may concern Be it known that 1, ANDREW M. JOHNSON, a citizen of theUnited States, and residing at Indianapolis, in the county ofMarion andState of Indiana, have invented certain new and useful Improvements inAutomatic Grease-Cups, of which the following is a specification.

My invention relates to the automatic compression grease-cups orlubricators in which a spring-pressed plunger is adapted to force aheavy or turgid grease or lubricant to mechanical parts to belubricated.

The objects of my invention are to provide a lubricator so constructedas to provide a constant feed at any adjustment to parts to belubricated, to provide means whereby the oil or grease chamber may berefilled without thev removal of any parts therefrom, or withoutalteration of adjustment, and the use of certain construction of plungerand packings as will effectively prevent the grease-from passing by theplunger, without causing unnecessary friction, and providing means forregulation of feed.

The invention consists of new and novel features and parts combined asshown in the accompanying drawings and as described in thespecifications and more particularly pointed out in the claim.

Figure 1 is a partial vertical sectional view of my invention showingthe hinged cover and grease reservoir in section and showing the plungerdrawn fully into the crown of the cover, the compression spring beingfully collapsed and retained in such position by a wing-nut fitted tothe threaded stem of plunger, while charging. Fig. 2 is a side elevationof the compression greasecup with hinged cover thrown open preparatoryto refilling the reservoir with lubr1- cant. Fig. 3 is a top view of thesaid wingnut, having a compression screw taking on a cushion acting onthe threaded stem to prevent it from being jarred out of adjustment.Fig. 4 shows a view of plunger 1n section and spring in elevation. Fig.4 shows edge view of plunger, with packing broken away, and the packingspring. Fig. 5 is a pseudo-perspective View of the plunger packingspring detached.

Referring to the parts of my lmprovement in detail, as pointed out bynumerals, 1 indicates the body, 2 the arched cover hinged to the body at3, 4 the plunger provided with screw threaded stem 5; to the threadedsection of the. said stem-is fitted a Specification of Letters Patent.Patented Nov. 23, 1.91150 suitable-wing nut 6, which is adaiptedto adijust the distance of movement of the plunger as desired and is providedwith a com-' pre'sslon screw 21, which takes on a cushion between it andthe thread section of said stem whereby the plunger is held or adjustedto any desired distance of movement, 7 the compression spring adapted toforce the plunger down upon the grease within the cup, as it is desiredto force the lubricant to parts to be lubricated; 8, a latch pivoted at9, to the side of the body of the grease-cup, provided with a squaretooth or hook 18, which is adapted to catch over the projection 10,provided on the cover, when the latter is closed and which is therebyheld firmly when the plunger is released and 0p erative; at 11 theopposite end of said latch terminates in a handle or lever end by whichit is conveniently operated and is provided with a suitable spring 12,adapted to retain the latch in engagement with the cover at all times.

An annular recess or groove 17 surrounds the plunger 4 in which isplaced a strip of firm leather 13, preferably cut as seen at 14 with alap joint and is of such length as to press firmly into the cup, and toprovide further for efficient contact or pressure of the leather stripused as a plunger packing to prevent the grease from passing past theplunger I employ a spring metal strip 15, of suitable length to reacharound the smaller circumference within the packing recess 17 in theplunger, and cut at ends at a suitable slant as shown at 16.

At 19 the stem of the cup is preferably screw-threaded to attach tomachinery to be lubricated.

At 20 I have provided a pointed screw cutting through the duct 22, sothat the discharge through the duct may be readily adjusted to anydesired amount.

There are a number of minor changes or alterations that might beresorted to in the use and application of my device without departingfrom the spirit and scope of my invention and I would have it understoodthat I hold myself at liberty to make any such alteration and changes asfall fairly within the spirit and scope of the invert. tion and What Iclaimas new and desire to secure' by Letters Patent is:

The combination with a grease receptacle.

of a cover hinged thereto and having a 0011- cave or hollowed out innerside and a central opening, a cup-shaped piston'formed with aninternally-threaded hollow boss pro-- jecting centrally from the bottomof said I shaped piston around said boss, and means for turning saidstem, the said spring being adapted to be compressed within the concavecover and concealed between said cover and said piston.

In testimony whereof I afiix my signature in presence of two witnesses.

ANDREl/V M. JOHNSON.

Witnesses:

C. A. JOHNSON, L. M. HOWE.

. Gopies of this patent may be obtained for'five cents each,by-addressing the Commissioner of Patents.

- Washington, D. G-

